Safe-driving promotion system and safe-driving promotion device

Abstract: [Constitution] The safe-driving promotion system includes attachment sensing means 100 for sensing that a male part 11 of the seat belt of an automobile 1 has been attached to a female part 12, and for outputting a first start permission signal α; start controlling means 200 for receiving the first start permission signal α and putting a motor 20 of the automobile 1 into a startable state; breath component concentration determining means 300 for detecting alcohol contained in the breath of the driver of the automobile 1 and performing concentration determination of the alcohol; and attachment preventing means 400 for preventing the attachment between the male part 11 and the female part 12 of the seat belt. The attachment preventing means 400 is configured to allow attachment of the male part 11 to the female part 12 in accordance with a determination result of the breath component concentration determining means 300. [Object] An object of the present invention is to provide a safe-driving promotion system for obliging a driver to wear a seat belt and effectively preventing drunk driving and/or drug driving.